<template>
  <div>
    <!-- 图片上传组件辅助 -->
    <el-upload
      class="avatar-uploader quill-img"
      :id="'quillImg' + randomVal"
      :action="uploadImgUrl"
      name="file"
      :show-file-list="false"
      :on-success="quillImgSuccess"
      :on-error="uploadError"
      :before-upload="quillImgBefore"
      accept=".jpg, .jpeg, .png, .gif"
    ></el-upload>

    <!-- 富文本组件 -->
    <quill-editor
      class="editor"
      v-model="content"
      :ref="'quillEditor' + randomVal"
      :options="editorOption"
      @blur="onEditorBlur($event)"
      @focus="onEditorFocus($event)"
      @change="onEditorChange($event)"
    ></quill-editor>
  </div>
</template>

<script>
import { getToken } from "@/utils/auth";
import { quillEditor } from "vue-quill-editor";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";

// 工具栏配置
let toolbarOptions = [
  ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线
  ["blockquote", "code-block"], // 引用  代码块
  [{ list: "ordered" }, { list: "bullet" }], // 有序、无序列表
  [{ indent: "-1" }, { indent: "+1" }], // 缩进
  [{ size: ["small", false, "large", "huge"] }], // 字体大小
  [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
  [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
  [{ align: [] }], // 对齐方式
  ["clean"], // 清除文本格式
  ["link", "image", "video"], // 链接、图片、视频
];

const titleConfig = {
  "ql-bold": "加粗",
  "ql-color": "字体颜色",
  "ql-font": "字体",
  "ql-code": "插入代码",
  "ql-italic": "斜体",
  "ql-link": "添加链接",
  "ql-background": "背景颜色",
  "ql-size": "字体大小",
  "ql-strike": "删除线",
  "ql-script": "上标/下标",
  "ql-underline": "下划线",
  "ql-blockquote": "引用",
  "ql-header": "标题",
  "ql-indent": "缩进",
  "ql-list": "列表",
  "ql-align": "文本对齐",
  "ql-direction": "文本方向",
  "ql-code-block": "代码块",
  "ql-formula": "公式",
  "ql-image": "图片",
  "ql-video": "视频",
  "ql-clean": "清除字体样式",
};
let randomValCom = 0;
let handlersObj = {
  image: function (value) {
    console.log(randomValCom);
    if (value) {
      // 触发input框选择图片文件
      document.querySelector("#quillImg" + randomValCom + " input").click();
      // document.querySelector(".quill-img input").click();
    } else {
      this.quill.format("image", false);
    }
  },
};
export default {
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
    },
    /* 图片大小 */
    maxSize: {
      type: Number,
      default: 4000, //kb
    },
    /* 是否禁用 */
    isDisabled: {
      type: Boolean,
      default: false,
    },
  },
  components: { quillEditor },
  data() {
    return {
      content: this.value,
      editorOption: {
        placeholder: "",
        theme: "snow", // or 'bubble'
        placeholder: "请输入内容",
        modules: {
          toolbar: {
            container: toolbarOptions,
            handlers: handlersObj,
          },
        },
      },
      uploadImgUrl: process.env.VUE_APP_BASE_API + "/file/upload", // 上传的图片服务器地址
      randomVal: 0,
    };
  },
  mounted() {
    randomValCom = (Math.random() * 10000).toFixed(0);
    this.randomVal = randomValCom;
    this.addQuillTitle();
  },
  watch: {
    value: function () {
      this.addQuillTitle();
      this.content = this.value;
    },
  },
  methods: {
    onEditorBlur() {
      //失去焦点事件
    },
    onEditorFocus(event) {
      //获得焦点事件
      event.enable(!this.isDisabled);
    },
    onEditorChange() {
      //内容改变事件
      this.$emit("input", this.content);
    },
    // 富文本图片上传前
    quillImgBefore(file) {
      let fileType = file.type;
      if (fileType === "image/jpeg" || fileType === "image/png") {
        return true;
      } else {
        this.$message.error("请插入图片类型文件(jpg/jpeg/png)");
        return false;
      }
    },
    quillImgSuccess(res, file) {
      // res为图片服务器返回的数据
      // 获取富文本组件实例
      let quill = this.$refs["quillEditor" + this.randomVal].quill;
      // 如果上传成功
      if (res.code == 200) {
        // 获取光标所在位置
        let length = quill.getSelection().index;
        // 插入图片  res.url为服务器返回的图片地址
        quill.insertEmbed(length, "image", res.url);
        // 调整光标到最后
        quill.setSelection(length + 1);
      } else {
        this.$message.error("图片插入失败");
      }
    },
    // 富文本图片上传失败
    uploadError() {
      // loading动画消失
      this.$message.error("图片插入失败");
    },
    // 富文本添加title
    addQuillTitle() {
      const oToolBar = document.querySelector(".ql-toolbar"),
        aButton = oToolBar.querySelectorAll("button"),
        aSelect = oToolBar.querySelectorAll("select"),
        aSpan = oToolBar.querySelectorAll("span");
      aButton.forEach((item) => {
        if (item.className === "ql-script") {
          item.value === "sub" ? (item.title = "下标") : (item.title = "上标");
        } else if (item.className === "ql-indent") {
          item.value === "+1" ? (item.title = "向右缩进") : (item.title = "向左缩进");
        } else if (item.className === "ql-list") {
          item.value === "ordered"
            ? (item.title = "有序列表")
            : (item.title = "无序列表");
        } else if (item.className === "ql-header") {
          item.value === "1" ? (item.title = "标题H1") : (item.title = "标题H2");
        } else {
          item.title = titleConfig[item.classList[0]];
        }
      });
      aSelect.forEach((item) => {
        if (item.className != "ql-color" && item.className != "ql-background") {
          item.parentNode.title = titleConfig[item.classList[0]];
        }
      });
      aSpan.forEach((item) => {
        if (item.classList[0] === "ql-color") {
          item.title = titleConfig[item.classList[0]];
        } else if (item.classList[0] === "ql-background") {
          item.title = titleConfig[item.classList[0]];
        }
      });
    },
  },
};
</script>

<style>
.editor {
  line-height: normal !important;
  height: 192px;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
.ql-editor.ql-blank::before {
  font-style: inherit;
}
.ql-tooltip.ql-editing {
  left: 15px !important;
}
</style>
